Soil-water catch basin and heat reclaimer



Oct 3o, 1928.- v F. S. BOLTZ SOIL WATER CATCH BASIN AND HEAT RECLAIMER Filed Feb'. 1v. 192s w Fi Z Fig- B- ATTORNEY?? PATENT OFFICE.

FRED S. BOLTZ, OF MANSFIELD, MASSACHUSETTS.

SOIL-WATER CATCH BASIN AND HEAT RECLAIMER.

Application filed February 17. 1926. Serial No. 88.908.

The invention has for one object to provide an apparatus for utilizing the heat of a heated fluid which has already been used but is still hot and which usually is allowed to run to waste, such as water which has performed its function in a laundry, dye house, wool scouring plant or elsewhere. l

Another object of the .invention is to pro'- vide a combination catch basin and heat re- 0 claiming apparatus.

Other lobjects and features of the invention will be more particularly set forth and claimed hereinafter. j

The invention will be fully understood 15 from the following description when taken in connection with the accompanying d-rawings and the novel features thereof, will be ointed out and clearly defined in the claims at the close of this specification.

In the drawings:

Fig. 1 is a plan view of the apparatus with the cover removed.

Fig. 2 vis a vertical sectional view on line 2-2, Fig. 1.

Fig. 3y is a vertical sectional view on line a-a, Fig. 1.Y

Fig. 4 1s a section on line 4 4, Fig. 1, partly broken away.. A

Referring to the drawings, thereis shown at A a unitary heating apparatus having a hollow cylindrical shell 1() set in vertical position having tube sheets 11, and lower ends respectively, and tubes 13 extending verticallythrough the shell and connected with the tube sheets, the said tubes being o en at each end `to the interior of the catch basin B in which it is set.

The hot soil waterl from the catch basin 'will enterv the tubes 13 at their upper ends as lwill be hereinafter described.

An inlet pipe 14 for the fresh water which is to be heated enters the shell through an inlet a erture in the wall near the lower end i thereo just above the lower tube sheet, the 45 lower end of said pipe being open to allow the fresh water to pass into the shell and thence to pass upward around the tubes 13 to the fresh water outlet 15 through the side wall of the shell just below the upper tube sheet 11. The fresh water will be heated as it passes along the tubes through the shell. The fresh water outlet pipe lpconveys the heated fresh water to places of use.

The fresh waterinlet pipe 14 is connected with a suitable source having a head pressure, preferably `being connected with vthe 12 at its upper city water supply so that pressure will act. on the water to orce it upward from the bottom of the shell. In the form shown in the drawings the fresh water is supplied to the pipe 14 by a supply pipe 8 tapped into the transverse pipe 16. The fresh water when heated 1s V.conveyed away by a pipe 18 tapped into the pipe 16.

Theshell 10 extends slightly below the bottom tube sheet 12 and rest-s on suitable supports rising from the bottom of the catch basin as will beV hereinafter described. The

said tube sheet 12 is formed with a downwardly extending annular flange 21 which is 1ns1de of the shell and also rests on said supports.

On the inside ofthe shell just above the bottom tube sheet there is a flanged ring 22 of somewhat less diameter than the inner diameter of the shell and resting on the bottom tube sheet so that there is formed an annular space 24 between the vertical wall of the shell and the ring. This ring has at its upper end an annular horizontal flange 23 which extends radially outward to the inner periphery of the shellso that it closes the -top of said annular space. The fresh water inlet pipe 14 communicates with the said annular space 24 through an aperture in thewall of the shell.

The peripheral' side wall of said ring is formed with perforations 25 at intervals opening into the interior of the shell, so that the water from the inlet pipe may be distr1buted through said perforations and spread around the tubes 13.

A baille plate 7 is provided which extends transversely across the interior of the shell a short distance below the outlet 15, said-baille being apertured for the passage of the tubes 13 and having a central aperture 6 through which all of the fresh water must pass before it can reach the outlet 15. This causes the fresh water to take an indirect course as well as to retard its movement and thus come more lcompletely into contact with the hot'tubes as well as remain a longer time subject to their heating effect. l

The said shell and its connected parts are set within the catch basin B somewhat above the bottom thereof. The catch basin should be water tight.

lll

than the upper section so that it may bel lowered into place through the upper section without disturbing 'the upper section. This is to permit the upper' section to be installed as soon as the pit in the ground 34 has been dug deep enough for it and to allow it to remain undisturbed Vwhile'the pit is further deepened to receive the other. section 31 which may be lowered down through the upper section in telescopic fashion.

When the lower section 31 is in place, the upper end will extend somewhat above the lower end of the upper section and the lapl ping portions will be secured together by any suitable means to form a tight' joint or if spaced apart a suitable packing or filling may be introduced between the lappino portions to make a tight joint. Preferably.- this is done by grouting 35 in cement or other suitable material. f

It is not essential, however, that the lower section be of the lesser diameter. If desired,

' the section which is rst introduced might be' lowered as the pit is deepened and thus finally become the bottom section and then the other section may be introduced on top of the section first inserted and jointed thereto bg' a broken or lap joint or in any other suita le way. In preparing the pit in the earth for the metal shell which forms the catch basin, the workmen may dig a. hole conforming to the general oval shape of the shell until it reaches a depth where caving is feared (or the depth required for the upper section 30 #if the concentric telescopic form of section rst described 'is employed) then the section 30 is lowered in place; or if the second described form of 'lap sections is to be used, the section first introduced will be' the one which is to be still further lowered. When the pit in the earth is dug to the full. depth desired there should be'placed on the bot-` supports for the lower tom thereof tempera ttom can be covered section' 31 until the with a water tight base. The temporary supthrough ports 36 as shown in the drawings are stones.

The bottom 38 for the catch basin is made of coherete or other suitable material to form a hard, smooth and practically water tight bottom so that the soil water will not leak or base for the catch basin section 31'. The lower end of the shell 31 has on its inner pe- -vertical partition 48 plate extends upward between the said sidev it and to act as a permanent setting riphery an annular projection 39 which rests on the concrete bottom, This projection is shown as anannular angle plate. Preferably the concrete'bottom is carried up higher on one side than on the other, as shown at 41 and the lower section 31 of the catch basin Vhas a flange or projection 42 which rests on the top of this higher portion 41 of the concrete bottom. This higher ortion 41 has an inclined inner face 43, pre erably concaved. The purpose of this inclined face is to deflect the liquid in the bottom of the basin toward that portion of the basin into which the lower end of the overflow pipe 46 extends. Upright supports 45 are provided restingon the longitudinal part of the concrete bottom and rising to the same height as the inclined wall 41 of the bottom to cooperate with the said wall 41 to support the shell 10.

AV soil water overflow pipe 46 is provided through which the soil water after being cooled by passing down through the cool fresh water will be carried from the lower part of the catchbasin up above the top of the hot soil water tubes 13 and thence be discharged to the sewer. This overflow pi e 46 is open at its lower end into the catch asin near the bottom ofthe catch basin so that the soil water can enter it. Said pipe 46 extends up outside of the shell 10 within the catch basin 'to a point somewhat 'above the p normal level of the hot soil water in the catch basin as shown at 47. The upper part of said pipe is enlarged in area from a point somewhat slightly below the top of the shell 10 by providing an extension on one side. A which serves as a baille the main body of the overextension and This baille extends up 'to about flow pipe'46.

the normal level of the liquid but not to the full height of the pipe 46. The baille 48 is shown as an upward extension of the inner l side wall of themain body of the pipe 46. This forms a chamber 49 in said side extension into which the soil water .which comes up from the bottom of the basin will flow over thetop of the baille 48 which serves as a dam. An outlet pipe 50 leads from the lower part of said chamber 49 to carry the cooled soil water to the sewer or other'discharge' point.

.The pipe 46 is-open at the top. A door or i valve -51 1s provided in that side of ipe 46 which is opposite the baille 48 above t e normal level of the liquid, this door. being usuall closed so that the liquid coming .up throili-3 pipe 46 will flow over the top of the b y plate 48 into the chamber 49 and thence to the discharge. ipe 50.

The so water enters the -catch basin B through an inlet pipe 9.

- The cold I will at first cool the hot soil water inthe tubes while in turn the hot soil water in the tubes freshwater coming the shell p charge pipe leading from said chamber.

will heat the ifresh water inthe shell; also the hot soil water in the basin surrounding the shell will keep the shell warm which in turn will help heat the fresh water therein. The fresh water will naturally rise as itis heated and the -head pressure on incoming coldl re'sh water will facilitate the circulation.

The hot soil water from the catch basin will enter the tubes 13 at the open upper ends. The soil water which is inthe tubes will be slightly cooler than the' hot soil water surrounding thc shell, andtherei'ore a free circulation of the soilwater will take place, down through the tubes 13 and thenceto the open lower end of the overilow pipe, throu h which it will be forced by the pressure of t ie constantly inflowing soil water. i

What l claim is:

1. An apparatus of the character described comprising a shell having tube sheets in its opposite ends and tubes extendin v`throu h thc shell and connected with said s eets, said tubes being open at their ends, a source'lot fresh water supply, a pipe connected therewith adapted to introduce fresh water into the shell, an outlet pipe leading from the shell through which the fresh water is normally dischargedyin combination with a soil water catch basin in which saidfshellis nclosed and`v mounted in such manner that the said tubes are open at bothfends to the'soil water in the basin, anV overflow pipe extending from the lower part of the basin below the bottom of the shell to a pointsome distance above the top ofthe shell and having a discharge outlet to a suitable p ace outside off the basin. 1 l

2. An apparatus of the character described comprising a tubular shell having tube sheets at its ends and a series oftubescon.- necting said tube sheets and open at their ends, a soil water catch basin in which said shell is set in such position that both ends of the tubes ,are open to the soil water, a fresh water inlet pipe opening into said shell in such manner that the fresh water will be Vdistributed around the said tubes,an outlet for the fresh water, an. overflow pipe extending from the lower art of the basin to .a point` some distance a ve theftop of the shell, a branch chamber connected with said overflow A pipe at or near its upper end, abaiiie plate between the main overflow pi and said chamber over which the contents of the over- -ilow pipe pass into said chamber and a dis- 3. A catch basin for soilwate'r comprising, a soil water inlet at or near the upper end of the basin, an overiiow pipe extending from the lower part of the basin to the upper part'A thereof, an outlet from the upper part of saidh overflow pipe communicating with a dis,- charge outlet from the upper part of the basin, and a shell enclosed within the basin having tube sheets at the top and bottomends a soil water inlet opening into the upper part of said basin', a soil water outlet pipe extending from near the bottom of said catch basin to a pointabove the normal level of the soil water in the basin, said outlet pipe having a discharge outlet near its upperend to a point outside the catch basin, a shell Aenclosed 'within said catch basin having tube sheets at its upper and lower ends and a plurality of vertical tubes connectin said tube sheets and "open at both ends to tie soil water in the catch basin, means for introducing fresh water into said shell, and an outletto carry tlie'i'resh water from the upper part of said shell and out oi' thecatch basin rwithout being formed with aperturesior the passage ofv tlie` said tubes and having an opening through which the fresh water must pass from the portion of the shell below said baie into that portion of the shell above the 'baie and thence to the outlet.

6.` A waste water heat extractor comprising a waste water chamber through which w-'arm waste water passes, a heat -transfer element within said waste water chamber conlos' sisting of a chamber through which clean waing both ends open to the waste water, the walls of said tubes being exposed to contact withthe clean water` in the clean waterV chamber and. a waste water over-flow pipe open at its lower. end to the waste water in the lower part of the waste water chamber and having a discharge outlet to a place' outside of the waste water chamber.-

7. A waste water'heat extractor comprising a waste water-'receptacle into and out of which thewaste water passes, avclean water chamber enclosed within said waste water receptacle, a heat transfer element consistin of tubes mounted in said clean watercham both ends ofsaid tubes being open to the waste water in said receptacle, the clean water ter passes and tubes within said chamber havchamber having an inlet and an outlet opening whereby clean water is admited to the chamber for contact with the walls of the waste water tubes and then ypasses out without mingling with the Waste water, and a waste water over-How pipe open at its lower end to the waste water in the lower part of the waste water chamber and having a discharge outlet to a place outside of the waste water chamber.

8.- Apparatus of the character described havin a waste water catch basin, a shell set in sai basin having tube Sheets sat its upper and lower ends, a series of tubes connecting said sheets and open at their ends to the waste water in said basin, the upper ends of thesaid tubes being below thel top of the waste water basinand the lower ends of the tubes being for the clean ,w'ater at or near the top of the shell after circulation aroundthe waste water tubes. l

9. A. waste water heat extractor having a catch basin, an inlet thereto for warm Waste water, anover-flow pipe open at its lower end to the waste water in the lower Part of the basin and conducting the waste water out of the basin in combination with a heat transfer element comprising a shell suspended in said basin, means for conducting clean water into said shell and thence out of said shell to a ce outside of the basin and con-.

suitable P15 duits for he waste water 1n the basin which extend through the clean water in the Shell whereby the heat from the waste water passing through the said conduits is conducted by the walls of the conduits to the clean water in the shell without mingling the waste water With the clean water.`

l0. A waste water heat extractor having a catch basin, an inlet thereto for warm waste water, in combination with a heat transfer element comprising a shell suspended in said basin, means for conducting clean water into said shell and thence out of said shell to a suitable place outside of the basin, conduits for the waste water in the basin which extend through the cleanvwater in the shell whereby the heat from the .waste water passing through the said conduits is conducted by the walls of the conduits to the clean water in .the shell without mingling the waste water with the clean water, and a waste wat/er overflow pipe open at its lower end to the waste water in the lower part of the waste water chamber and havinga discharge outlet to a place outside of the waste water chamber.

In testimony whereof I affix my. signature.

' i. FRED S. BOLTZ. 

